On Tue, 24 Apr 2012, Denys Vlasenko wrote:
On Tue, Apr 24, 2012 at 9:55 PM, Tomasz Czapiewski <xe...@irc.pl> wrote:
Let's verify that.
Can you add a debugging printout in getty_main() here?
/* Create new session and pgrp, lose controlling tty */
bb_error_msg("pid:%d", getpid());
bb_error_msg("sid:%d", getsid(0));
pid = setsid(); /* this also gives us our pid :) */
if (pid < 0) {
...
run it and tell me what do you observe?
Thanks. I need more data. Can you add these printouts?
fd = open("/dev/tty", O_RDWR | O_NONBLOCK);
bb_error_msg("dev tty fd:%d", fd);
if (fd >= 0) {
bb_error_msg("doing NOTTY");
ioctl(fd, TIOCNOTTY);
bb_error_msg("done NOTTY");
close(fd);
}
bb_error_msg("end of if");
}
starting pid 1, tty '/dev/ttyS0': '/sbin/getty -L ttyS0 115200 vt102'
getty: pid:851
getty: sid:851
getty: dev tty fd:3
getty: doing NOTTY
starting pid 1, tty '/dev/ttyS0': '/sbin/getty -L ttyS0 115200 vt102'
process '/sbin/getty -L ttyS0 115200 vt102' (pid 851) exited. Scheduling for
restart.
getty: pid:852
getty: sid:852
getty: dev tty fd:3
getty: doing NOTTY
process '/sbin/getty -L ttyS0 115200 vt102' (pid 852) exited. Scheduling for
restart.
starting pid 1, tty '/dev/ttyS0': '/sbin/getty -L ttyS0 115200 vt102'
getty: pid:857
getty: sid:857
getty: dev tty fd:3
getty: doing NOTTY
starting pid 1, tty '/dev/ttyS0': '/sbin/getty -L ttyS0 115200 vt102'
process '/sbin/getty -L ttyS0 115200 vt102' (pid 857) exited. Scheduling for
restart.
getty: pid:891
getty: sid:891
getty: dev tty fd:3
getty: doing NOTTY
process '/sbin/getty -L ttyS0 115200 vt102' (pid 891) exited. Scheduling for
restart.
starting pid 1, tty '/dev/ttyS0': '/sbin/getty -L ttyS0 115200 vt102'
...
Besides this test, I have tested again BusyBox 1.20.0 + getty.c from
1.19.3 on this device - everything is fine with such combination.
Thanks in advance.
--
Tom
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